Current contaminant deposition measurements in precipitation throughout the NWT

Regions: Inuvialuit Settlement Region, Gwich'in Settlement Area, Sahtu Settlement Area, Dehcho Region, South Slave Region, Qikiqtaaluk Region, Kivalliq Region, Kitikmeot, Nunavut

Tags: physical sciences, contaminants, atmospheric sciences, snow, precipitation, organic contaminants, deposition

Principal Investigator: Gregor, Dennis J. (7)
Licence Number: 12397
Organization: National Water Research Institute, Environment Canada
Licenced Year(s): 1993
Issued: Jan 01, 1993
Project Team: A. Redshaw, M. Palmer, G. Whitley, M. Alaee, C. Teixeira, N. Jones

Objective(s): To quantify annual deposition of trace organic contaminants to the Canadian north through the establishment of a multi-station sampling network; to develop methods capable of assessing seasonal and event deposition of contaminants at selected intensive sampling sites co-located with several of the annual deposition stations; to determine spatial variability in contaminant deposition and assess short term trends; to compare precipitation chemistry and atmospheric chemistry at selected sites.

Project Description: Contaminants are carried in the air to the arctic during the winter when large-scale wind movements bring these contaminants from industrialized locations in North America, Europe and Asia to the north. Snow can collect these compounds from the air and bring them to the ground where they can accumulate. Thus, it is important to study the amount of contaminants in snow to determine the types and quantities of contamination that are brought to the arctic.